Automatically-operated railroad gate



June 1o, 1924. 1,496,969

H. AZZI AUTOMATICALLJY OPERATED RAILROAD GATE Filed om. 9, 192s .4 a l 17j/Z Y" 9*/[7 IN VEN TOR BY ma? @a A TToR Y Patented June10, 1924.

HARRY AZZI, OF NEW YORK, N. Y.

AUTOMATICALLY-OPERATED RAILROAD GATE.

Application filed October 5, 1923. Serial No. 666,848.

To all 'whom t may concer/a.'

Be it known that- I, HARRY AZZI, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Automatically Operated Railroad Gates, of which the following is a specification.

This invention relates generally to automatically operated railroad gates, which are adaptedV for operation by passing trains, the invention having for an object the provision of an automatically operated railroad gate of simple construction.

For further comprehension of the inven tion, and of the objects and advantages thereof, reference will be had t thel following description and accompanying drawing, and to the appended claimsv in which the various novel features of the invention are more particularly set forth.

Fig. 1 of the drawings is a side elevational view. showing the invention applied to a railroad track.

Fig. 2 is a detail sectional elevation' of the operating element.

Fig. 3 is a fragmentary elevational view at rightl angles to Fig. 2.

Fig. 4 is a plan view, omitting the lower 30 parts of the device.

Referring now to the drawing the reference numeral indicates in side view an ordinary railroad track. According to my invention I mount at a suitable point preferably between' the track rails a vertical guide element 12 which is located below the level of the rails in a suitable recess in the roadbed, this guide element being open at the top, and closed at the bottom by a member 12.

Freely slidable in this guide element, and projecting from the top thereof, is a plunger 14 on the upper end of which is a horizontally projecting head 15, this head extending longitudinally of the track. Thishead is formed with dovetail tongues 15 engag- I,

ing in complementary grooves in a bar 17 which seatsthereon. The head 15 may be reinforced by a strut 18 connected at. opposite ends thereto and to the plunger 14, this strut passing through a vertical slot 19 in the guide element 12.

The bar 17 is pressed toward the rail by means of springs 17a which bear between the bar and a flange 15El on the head 15.

This bar is arranged to present an inclined top surface, while the'side thereof which is tuined toward the rail is beveled off at one end as at 17 Freely slidable in the guide element 12, below the plunger 14y is a disk 20 having a diminished rod or stem 21 which extends downward through'the bottom 12 of the guide element. The projecting lower end of this Fstem is connected, by a slot and pin connection 22, with one'end of a lever 24 fulcrumed between its ends as at 23 vto a lug on the. guide member, the opposite end of this lever having formed thereon a gear Vsegment 25 which meshes with a gear pinion 26 to which is fixed co-axially a pulley 27. Connected at one end to this pulley is a rope-28 which leads over suitable guide pulleys to connect to a. gate bar 30 fulcrumed as at 31 on a standard 32 and normally held vertically by a counterweight 33.

Interposed between the top of the guide element; 12 and the bar 15 on the plunger are a pair of coiled expansion springsBS which act to move'the plunger 14 upward after depression by the train. Another eX- pansion spring 89 is interposed between the plunger and the disk 2() and acts to transmit downward movement of the plunger to the disk. Movement of the disk away from the plunger is 4limited by a rope or chain 40 connected at opposite ends respectively to the plunge-r and disk.

The plunger 14 is adapted to be retained in lowered position until after the train has passed the crossing by means of a bolt 43 slidable in the side of the guide element 12 and adapted to engage in a notch 44 in the side of the plunger. A spring 45 urges this bolt tolocking position, the movement of the bolt in this direction being limited by a collar 46 0n the bolt. Connected to the outer end of the bolt 43 is a rope 47 which is led, along suitable guide elements to a release device located on the opposite side of the crossing. This release device comprises a plunger 50y having a beveled head 51 adapt-V ed to be engaged by the part carried by the train, this plunger being freely slidable in a casing 52 and being urged upward by an expansion spring 53 in the latter. A pulley 54 is here shown as mounted on the casing and the rope 47 is led over the top of said pulley and downward to connect to a finger 55 fixed to the plunger and projecting Iil) vthe direction ot the arrow in Fig. l, a suitable part thereon such as indicated at 65 in Fig. 3, and which is arranged to present a laterally projected linger, engages the bar 1'? and depresses the plunger, the bolt 43 snapping into the notch 44 and holding the plunger depressed. Since the dash-pots 60 prevent rapid movement of the disk 2O the plunger compresses the spring 39 and the latter moves the disk at a slower' rate 'of speed causing the gate 8O to be closed. After the train has passed the crossing the plunger 50 is depressed by the part G5 and the bolt 43 retracted. the springs 88 returning the plunger le and connected parts to normal position, the coimterweight 33 causing the gate to swing open. Should a train be traveling in an opposite direction the part 65 will engage the beveled end '17 ot' the bar i7 and move the latter to one side without depressing the said bar or operating the device.

The gate 3() may be provided 'with a covered casing '69 on which the word Stop is shown, and a lamp may be provided in said casing to be illuminated by the closing of 'a pair of contacts 70 and 7l.

Having thus described my invention what l claim as new and desire to protect by Letters Patent of the United States is as follows:

l, .ln a railroad gate, a gate proper, an element adapted for operation by a train, a second element adapted lor operation by the first, an operative connection between said second element und the gate proper, and an expansion spring bearing between said rst and second elements, and a dashsp'ot engagged with said second element to transmit movement trom the Vlirst to the second element to retard the movement thereof.

Q, ln a railroad gate, a gate proper, a

olun'er ada )ted Yfor o )eration b a train a guide element for said plunger, a member slidable in said guide element under said plunger, an operative 'connection between saidmember and the gate proper, an exparisieny spring interposed between said plunger and member, a ilexible connecting` element limiting movement of said plunger and member away from one another, and a dash-pot adapted to retard movement oi' said member.

3. ln a railroad gate, a gate proper, a plunger adapted 'for operation by a train, a guide element for said plunger, a member slidable in said guide element under said plunger, an operative connection between said member and the` gate proper, an expansion spring interposed between said plunger and member, a ileXible connecting element limiting movement or' said plunger and member away from 'one another, and a dash-pot adapted to retard movement of said member, a spring adapted to move said plunger upward, and a bolt for holding said plunger depressed.

4l. ln a railroad gate, agate proper, a plunger adapted for operation by a train, a guide element t'or said plunger, a member slidable in said guide element under said plunger, and operative connection between said member and the gate proper, .an eX- pansien spring interposed between said plunger and member, a flexible connecting element limiting movement of said plunger and member away from one another, and a dash-pot adapted to retard movement ot' said member, a transversely 'slidable bar on said plunger adapted to be engagedby the train.

5. ln a railroad gate, agate proper, a plunger adapted for operation by a train, a guide element for saidplunger, a member slidable in said guide element under Vsaid plunger, an operative connection between said member and the gate proper,an expansion spring interposed between said plunger and member, a flexible Yconnecting element limiting movement of said plunger and member away from one another, a dasl1- pot adapted to retard movement oi said member, a spring adapted to move said plunger upward, bolt for 'holding said plunger depressed, said 'bolt Vbeing adapted to automatically engage with said plunger when the latter is depressed, a second plunger adapted for operation by a train, and an operative connection between said second plunger and said bolt adapted to cause release oi said bolt upon depression of said second plunger.

ln testimony whereo'ie l have alixed my sign ature.

HARRY 

